New C++ version of ZombiePopulationManager. This system is what governs the placement and movement of zombies when they’re not directly on your screen, and this updated version should be an optimization for SP and MP – hopefully helping out lower spec machines and busy servers.

New weather-based challenges: A Storm is Coming, and The Descending Fog. Improved Winter is Coming challenge.

As ever, we do rigorous testing both internally and within the IWBUMS community beta channel – but due to wide range of hardware out there in the Steam wilds there will always be issues that need to be fixed after a build release. So please have patience while we patch up anything that arises.